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From: bijan@zildjian.chorus.fr (Bijan Forutanpour)
Newsgroups: comp.os.mach
Subject: Re: Installation of Mach on IBM RT
Keywords: IBM RT installation
Message-ID: <1990Oct8.114538@zildjian.chorus.fr>
Date: 8 Oct 90 10:45:38 GMT
References: <26477@cs.yale.edu>
Sender: bijan@chorus.fr
Reply-To: bijan@zildjian.chorus.fr (Bijan Forutanpour)
Followup-To: 356
Organization: Chorus systemes, Saint Quentin en Yvelines, France
Lines: 17


   When running install.tape (which is on the miniroot floppy),
there is a /etc/disktab or something to that effect, which has disk layouts
for every kind of disk. (Sort of like a /etc/termcap file).  Anyway, when you
run install.tape it calls /etc/newfs which reads from /etc/disktab the disk
information such as disk partition size, begin and end points, block size,
track size, etc to create the file systems.   This process would fail if there
is ANOTHER, different layout of the disk defined ON the disk, via a disk utility
program for example. This second layout causes problems for /etc/newfs.  

SO, you can either:

1) Use the disk utility program to define a layout, AND edit the /etc/disktab
   file on the miniroot floppy to conform to this layout, OR

2) Define an empty or NO layout using the disk utility program and go with
   the configuration on /etc/disktab.